Getting 404 error accessing magento configuration after installing new extension in magento

Following are two solution to this.

  • You need to simply log out from Magento Admin and log in again. The required resources will reloaded after login.


  • You can also override Mage_Adminhtml_System_ConfigController::_isSectionAllowed()

And reload the ACL tree by setting acl to $session


1st solution is recommended as you don’t need to override the controller and keep it simple as it is. Also, keep in mind that in 2nd solution, ACL tree will reloaded each time config page is loaded.